Difficulty of this game is such that using consumables (special ammo/potions/elixirs/scrolls) feels like cheesing instead of required.
Using almost anything is cheesy in this game. At least half of the items don't work as intended or are ridiculously OP, the feat balance is all over the place, and so is class balance.
This wouldn't be so bad if the hardest difficulty actually presented a reasonable challenge
Games in general these days are piss easy even on the hardest difficulty, presumably so that console players and other mentally retarded people don't feel insulted when they can't win